A partial blockage of a coronary artery may not cause noticeable symptoms. But, as the blockage worsens, it can cause symptoms such as chest tightness, difficulty breathing, and dizziness. This is a ...

A diagonal ear lobe crease (DELC), or Frank’s sign, is a deep crease or wrinkle extending to the earlobe. Some studies suggest this indicates a greater risk for coronary artery disease, which can ...

May 5, 2026 Scientists have developed a breakthrough injectable biomaterial that travels through the bloodstream to repair damaged tissue from within, reducing inflammation and jumpstarting healing.

A new gene therapy can reverse the effects of heart failure and restore heart function in a large animal model. The therapy increases the amount of blood the heart can pump and dramatically improves ...

As the central part of the circulatory system, the heart is responsible for pumping blood, supplying oxygen and nutrients, and removing metabolic waste such as carbon dioxide from all the tissues in ...

A heart PET scan is a noninvasive imaging test that uses a small amount of radiation. It helps doctors understand how the heart functions and whether it is healthy. Cardiac or heart PET scans create ...

What Is a Normal Sinus Rhythm? Normal sinus rhythm is when your heart beats in a regular, organized way. Your body has a built-in pacemaker called the sinoatrial (SA) node, or sinus node. It uses ...

Gigi Campos, 35, had a heart attack in February 2023. Though she had risk factors, doctors had always told her that she was young and healthy. As she recovered, Campos joined WomenHeart, a national ...

In systolic heart failure, the heart cannot effectively contract with each heartbeat. In diastolic heart failure, your heart cannot relax between heartbeats. Both types can lead to right-sided heart ...

In the normal heart, the heart's lower chambers (ventricles) pump in sync with the heart's upper chambers (atria). When a person has heart failure, often the right and left ventricles do not pump ...